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Brown started his day with an exchange of gifts with his counterpart from the state of Mexico, Gov. Eruviel Avila.

"(This is) my first stop on my first visit to Mexico as governor. I look forward to many years of working closely together," Brown said.

Working together will include Monday's announcement of a new Mexican business office in California.

"We are going to open a house of the state of Mexico in Los Angeles, California, in the next months in order to strengthen the cooperation of economic ties," Avila said. "(It is) for business development and cooperation for attending to the migrants to California."

Brown will have a private meeting later today with the president of Mexico, Enrique Pena Nieto.

Brown's gift to Avila included two books from one of California's most famous photographers, Ansel Adams.

Brown also took a not-so-subtle dig at Texas' decision to deploy National Guard troops to the border, saying Monday he expects it to be a short-lived measure and that "wiser minds will prevail."

Texas Gov. Rick Perry announced a decision last week to deploy up to 1,000 National Guard troops to the Texas-Mexico border over the next month to combat what he said were criminals exploiting a surge of children pouring into the U.S. illegally.

Asked about that, Brown said, "I hesitate to comment on the thinking that goes into the sending of the Texas National Guard to the border. I would suspect that it would be of relatively short duration and that wiser minds will prevail in the next several months."